International calling guide
Puerto Rico runs on AST (UTC−4) year-round with no daylight saving. Business operates Monday–Friday, 8 AM–5 PM in San Juan. Puerto Rico observes both US federal holidays and Three Kings Day (Jan 6). Best window: 9–11 AM AST on a Tuesday or Wednesday.
Puerto Rico
+1-787, +1-939 · UTC
Local Time Now
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See the live time gap between a global reference city and Puerto Rico at a glance no calculator needed.
Reference
New Delhi Time Now
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Destination
San Juan, Puerto Rico Time Now
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Puerto Rico runs on AST (UTC−4) year-round with no DST. A US territory with US federal holidays plus Three Kings Day (January 6).
Pro tip: Call 9–11 AM AST on a Tuesday or Wednesday.
Puerto Rico uses AST (UTC−4) permanently. No DST. When US EDT is active (summer), Puerto Rico and New York share the same hour.
Business hours in San Juan run 8 AM–5 PM Monday–Friday. The large pharmaceutical and financial sectors often keep extended hours.
Three Kings Day (Día de Reyes, January 6) is a major Puerto Rican holiday. The Christmas–Three Kings period (Dec 24–Jan 6) sees reduced business availability.
Puerto Rico observes all US federal holidays alongside local Puerto Rican holidays. The holiday calendar is more dense than the continental US.
The time differences range from 8 hours ahead of UTC to 5 hours behind UTC, showcasing the diverse time zones across the globe.
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The right window doubles your answer rate. The wrong one sends you straight to voicemail.
Avoid
Call without knowing AST (UTC−4)
Best Window
Tue–Wed, 9–11 AM AST
Avoid
Ring on Constitution Day (Jul 25)
Best Window
Mid-week, confirmed workday
Avoid
Cold call financial sector
Best Window
Scheduled, pre-arranged call
Avoid
Call after 5 PM (San Juan close)
Best Window
9–11 AM AST, Tue or Wed
Smart timing isn't just courtesy it directly drives better outcomes for every call you make.
Morning calls (9–11 AM AST) on Tue–Wed in San Juan double pickup vs. cold holiday dials.
2×
more pickups
Knowing Puerto Rico observes both Three Kings Day (Jan 6) and Constitution Day shows scheduling care.
+38%
connect rate
Pre-confirmed calls see 4× more engagement than cold outreach in Puerto Rico.
4×
engagement
Calling during Three Kings Day or Christmas week sends 90% of Puerto Rico calls to voicemail.
−90%
voicemail drops
Use these resources to plan every international call with confidence.
Set reminders and plan calls in advance so you never miss the optimal window.
Leverage automated analytics to identify the best call timing for every contact.
Instantly translate your local time to the recipient's timezone before dialling.
Professional outreach with automated scheduling features built into your CRM.
Four simple steps for every international call to Puerto Rico dial it right, every time.
Press "+" on mobile or "00" from most landlines. This opens an international line.
Puerto Rico's international code. Every call to Puerto Rico must start with +1-787, +1-939.
Add the local area or mobile network code — always drop any leading zero used for domestic calls.
Dial the remaining subscriber digits. Your number is now correctly formatted for international routing.
Jump to any country's best-time-to-call guide. Click any flag to open the full page.
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Everything you need to know about timing, time zones, and dialing Puerto Rico (+1-787, +1-939). Still have a question? Our wholesale team is one click away.
Tuesday–Wednesday, 9–11 AM AST (UTC−4). Puerto Rico uses Atlantic Standard Time year-round with no DST. Business operates Monday–Friday, 8 AM–5 PM in San Juan. Puerto Rico observes both US federal holidays and local Puerto Rican holidays — one of the highest total holiday counts in any US jurisdiction.